Understanding Empty Capsules and Their Growing Use in Japan

Empty capsules are widely used in Japan’s pharmaceutical and nutraceutical industries as a convenient way to deliver medicines, herbal extracts, and dietary supplements. They serve as protective shells—usually made of gelatin or plant-based materials—that hold powders, granules, or liquids.

What Are Empty Capsules?

An empty capsule is essentially a two-part container designed to enclose a specific dose of a substance. Once swallowed, the capsule dissolves in the stomach or intestine, releasing its contents safely and efficiently. Capsules are popular because they mask unpleasant tastes, are easy to swallow, and allow for precise dosage control.